Well..................I actually don't like the sound of the 20 dB setting. But I'm OK with 18, 10 and 0 dB settings. If I adjust for volume, I really can't hear the difference between 18, 10 and 0 dB. But something about 20 dB of gain in the M Stage doesn't sound right to me.

BTW, changing the gain from 0 to 10 to 20 dB doesn't increase the maximum output power available from the M Stage. I only use 18 dB with my 600 Ohm headphones because I run out of volume control travel on the 10 dB setting with quiet recordings.

I won't even touch this one!

Quote:

Originally Posted by Change is Good

I agree. For me, personally, I prefer 18dB for my Q701 and have kept it there since day one.

I'm on +18db too, perfect for both the He-400 & K701, but they like different opamps, for K701 - OP627BP is a killer, sounds fantastic! For the He-400 I'm running LME49710NA, it's not as perfect match as the K701 & 627, but I don't have a better option right now.

Just ordered the OPA627AP from coolbaby11 on Ebay for my M Stage that I am using with my HE-500, I have heard good things about changing the op-amp so I thought I would try it out but what should I really expect to be improved compared to the stock op-amp with the HE-500?

Just ordered the OPA627AP from coolbaby11 on Ebay for my M Stage that I am using with my HE-500, I have heard good things about changing the op-amp so I thought I would try it out but what should I really expect to be improved compared to the stock op-amp with the HE-500?

From my experience, rolling OP-amps only brings slight changes to the sound of M-Stage. Also, it is very hard to do any AB test if you don't have two M-Stage amps. The best you can do is to not expect anything so you may be positively surprised.

Just ordered the OPA627AP from coolbaby11 on Ebay for my M Stage that I am using with my HE-500, I have heard good things about changing the op-amp so I thought I would try it out but what should I really expect to be improved compared to the stock op-amp with the HE-500?

My He-400 works good with 2xLME49710NA and I use 2xOPA627BP for K701, the other way around sux.

I've just stuck a pair of LT1028ACN8 in the M-stage. Really good, its defo helping to remove the slight veil and the sound seems to be more free. I've used this opamp before and it is very transparent and open sounding.

I thought I would compare the mighty Matrix M Stage to the FiiO E09K headphone amp.

disclaimer: my Matrix has an LM4562, input coupling caps are deleted, the E09K is bone stock.

DAC was either a FiiO E17 used as a DAC or an iBasso D12 used as a DAC.

Source was an iPod into a Wadia dock which outputs SPDIF to the DAC.

Phones were AKG Q701.

Levels were carefully matched using an SPL meter and pink noise.

And the winner?

The Matrix M Stage.

The amps were very close, but the Matrix showed a bit more detail, a bit more texture, a little more space, a touch less midrange fog, a bit more transparency, a bit more microdynamics. For example, strumming of an acoustic guitar was a touch more tactile. When I switched to the FiiO I always had the feeling that I had just lost a little clarity. Even though I had carefully level matched (and re-checked it!) the Matrix sounded slightly louder, I can only guess this is due to the slight increase in transparency.

Is the Matrix worth twice as much as the FiiO E09K?

If you are a detail and texture freak, the answer would be yes.

But if you just want a good sounding amp without spending the money for a Matrix, get the E09K.

I thought I would compare the mighty Matrix M Stage to the FiiO E09K headphone amp.
disclaimer: my Matrix has an LM4562, input coupling caps are deleted, the E09K is bone stock.
DAC was either a FiiO E17 used as a DAC or an iBasso D12 used as a DAC.
Source was an iPod into a Wadia dock which outputs SPDIF to the DAC.
Phones were AKG Q701.
Levels were carefully matched using an SPL meter and pink noise.

And the winner?
The Matrix M Stage.

The amps were very close, but the Matrix showed a bit more detail, a bit more texture, a little more space, a touch less midrange fog, a bit more transparency, a bit more microdynamics. For example, strumming of an acoustic guitar was a touch more tactile. When I switched to the FiiO I always had the feeling that I had just lost a little clarity. Even though I had carefully level matched (and re-checked it!) the Matrix sounded slightly louder, I can only guess this is due to the slight increase in transparency.
Is the Matrix worth twice as much as the FiiO E09K?
If you are a detail and texture freak, the answer would be yes.
But if you just want a good sounding amp without spending the money for a Matrix, get the E09K.

Next comparo:
Comparing the Matrix M to the headphone amp in the iBasso D1

Thank yoo for the review. I guess this is the difference we can expect from any two amplifier designs.

I thought I would compare the mighty Matrix M Stage to the FiiO E09K headphone amp.

disclaimer: my Matrix has an LM4562, input coupling caps are deleted, the E09K is bone stock.

DAC was either a FiiO E17 used as a DAC or an iBasso D12 used as a DAC.

Source was an iPod into a Wadia dock which outputs SPDIF to the DAC.

Phones were AKG Q701.

Levels were carefully matched using an SPL meter and pink noise.

And the winner?

The Matrix M Stage.

The amps were very close, but the Matrix showed a bit more detail, a bit more texture, a little more space, a touch less midrange fog, a bit more transparency, a bit more microdynamics. For example, strumming of an acoustic guitar was a touch more tactile. When I switched to the FiiO I always had the feeling that I had just lost a little clarity. Even though I had carefully level matched (and re-checked it!) the Matrix sounded slightly louder, I can only guess this is due to the slight increase in transparency.

Is the Matrix worth twice as much as the FiiO E09K?

If you are a detail and texture freak, the answer would be yes.

But if you just want a good sounding amp without spending the money for a Matrix, get the E09K.

Next comparo:

Comparing the Matrix M to the headphone amp in the iBasso D12.

Yeah, I also say thanks. I had the E9k before getting the M-Stage but never was able to A/B them. I always wondered if I had made the right choice. Thank you for confirming that I did.